That said we do still have to address those technical design issues already identified in the comments previously. 129 0 obj <> endobj Extended-coverage (EC) sprinklers are made to provide . For vertical obstructions like columns, use the second-largest dimension instead of the height of the obstruction. The problem is, in several locations, their preferred location will place heads more than 15 feet apart. July 2016 In a nutshell, it means that the heads are spaced so that they overlap from head to head. Minimum Distance Between Sprinklers: typically 6'-0". NFPA 13R NFPA 1142 Ordinary temperature rated - 165F (74C) Flat cover plate with inch (13 mm) assembly adjustment. And naturally, the sprinkler head spacing distance rules are a little different for extended coverage models, given the area over which they can spray water. The information in the article is based on NFPA 13, Standard for the Installation of Sprinkler Systems. June 2020 June 2022 Second, they must be located so that the water that is discharged from the sprinkler is not disrupted or affected by construction elements such as beams, trusses, or soffits. Updates %%EOF (1.4 m) to less than 5 ft (1.5 m), 5 ft (1.5 m) to less than 5 ft 6 in. NFPA 16 Instead (11.3.6.1.2), a design must ensure that sprinklers are at least 8 feet from light fixtures or other similar obstructions and comply with the offset rules given in Table 11.3.6.1.3 and illustrated in Figure 11.3.1.6.3. NFPA 90A NFPA 502 The old conventional IRAS had a max K-factor of 11.2, which resulted in closely spaced IRAS 5 ft. - 10 ft. apart horizontally. Required fields are marked *. January 2022 May 2018 Table 11.2.5.1.2 (reproduced below) allows the user to determine how high above the bottom of the obstruction to place a sprinkler based on the horizontal distance between the sprinkler and the obstruction. In that case, a designer could flank the obstruction with sprinklers, provided that the centerline of the obstruction is within the allowable distance between sprinklers from each deflector. UFC 3 600 01 Note that extended coverage sprinklers throw water more horizontally, so they need more clearance to get around obstructions. Or in a corridor where corridor sprinklers give me the flexibility to spread them out but I need sprinklers for pockets that have significant shadowing. A concealed extended coverage quick response sprinkler has a sprinkler body with an axial passage for water, a cap normally closing the axial passage, and a thermally responsive structure. The only exception to this mandate is when obstructions do not exceed 4 feet and are lower than 18 inches from the sprinkler deflector. They have a heat-activated element made of either a glass bulb or a fusible metal link that will activate and discharge water when heated to a designated temperature. Extra hazard occupancy examples include printing plants, paint and varnish dipping operations, plywood manufacturing, solvent cleaning, and plastics processing. The Model N252EC sprinkler offers a maximum coverage area of 196 ft 2 (18.2 m ), which is almost twice that provided by standard coverage . The maximum distance shall be measured along the slope of the ceiling 11.2.3.1.3 Installation Requirements for Extended Coverage Upright, Pendent, Sidewall Spray Sprinkler, Standard for the Installation of Sprinkler Systems 2019 of New Jersey, 11 Installation Requirements for Extended Coverage Upright, Pendent, Sidewall Spray Sprinkler, 11.2 Extended Coverage Upright and Pendent Spray Sprinklers, Standard for the Installation of Sprinkler Systems 2013 of New Jersey, 8.8 Extended Coverage Upright and Pendent Spray Sprinklers, Standard for the Installation of Sprinkler Systems 2016 of New Jersey, Obstructed noncombustible (when specifically listed for such use), 1 ft (300 m) to less than 1 ft 6 in. November 2016 Sprinklers are designed for overlapping coverage. We should not impose artificial constraints for our design simplification or maintainers connivence. And this spray may cool those lower sprinklers and delay activation. Don't see what you're looking for? Distance from Ceiling: minimum 1", maximum 12" for unobstructed construction. (200 mm) long and 6 in. Turn to QRFS for your sprinkler installation needswhether its components or interpretation of head-scratching fire protection rules. A practice I like to do is making the EC sprinklers a different orifice if possible. Below is a summary of the rules for navigating these obstacles using extended coverage sprinklers. The sprinklers are designed for dry systems and preaction systems where it is necessary to prevent water or condensation from entering the drop nipple before sprinkler operation. December 2020 Yep, as long as the response is the same. I would ensure that the requirements for extended coverage sprinklers are met and use these throughout the given space. First, if the obstruction is more than 18 inches below the deflector of the sprinkler, you should not use the four-times rule. Baffles shall be of solid and rigid material that will stay in place before and during sprinkler operation. Nonetheless, the rules for spacing extended coverage sidewall sprinklers relative to obstructions are not too complicated. September 2019 v>|"OBF#GsyhT. Sprinklers must be quick response, standard or extended coverage, and pendent or uprights (NFPA 13-2016 8.15.24.2.1) Extended coverage sprinklers cannot be more than 16 ft x 16 ft spacing (NFPA 13-2016 8.15.24.2.1.1) Maximum ceiling height cannot exceed 20 feet (NFPA 13-2016 8.15.24.2.2) make all EC sprinklers 8.0K and Standard sprinklers 5.6K this helps any field installation errors, this not only requires a different symbol on the print but also a different reducer size on the drop. Standard sprinklers protecting all ordinary hazard occupancies shall not cover an excess of 130 square feet per head (Table 8.6.2.2.1 (b). This is useful in many applications, but it changes how they must be spaced out from other sprinklers, walls, and obstructions in the room. 0000008857 00000 n November 2017 You can mix standard spray sprinklers and extended coverage spray sprinklers within the same compartment as long as they are the same response and the spacing requirements for each type of sprinkler is maintained. In these cases, extended coverage sprinkler heads can be installed to increase the spacing between heads. **This may not always be cost effective! The minimum 1 is typical; however, concealed, recessed, and flush sprinklers may be mounted less than 1 from the ceiling and shall be installed based on their listing. All to extinguish a fire. NFPA 101 NFPA 68 ISO We are working on a project where the Architect is very particular about the placement of ceiling components, including sprinkler heads. Remember our job as FPE is to ensure proper fire and life safety, not to drive the Arch decisions. Extended Coverage Sprinklers EC/QREC Upright Sprinkler (K11.2) EC/QREC Ordinary Hazard Upright Sprinkler (K14.0) EC/QREC Pendent Sprinkler (K8.0) EC/QREC Pendent Sprinkler (K11.2) EC/QREC Ordinary Hazard Pendent Sprinkler (K14.0) QREC Concealed Pendent Sprinkler (K8.0) HI, You can mix standard spray sprinklers and extended coverage spray sprinklers within the same compartment as long as they are the same response and the spacing requirements for each type of sprinkler is maintained. October 2021 Sufficient distance between the sprinkler deflector and the obstruction allows the proper spray pattern to develop. to 6 in. Refer to the manufacturer data for specific throw data. (2 m), 6 ft 6 in. IFC Passive Building Systems Technical Questions? Your email address will not be published. 5. December 2019 NFPA 22 (550 mm) below the noncombustible ceiling/roof deck where the sprinkler is installed in conformance with, Installed in each bay of combustible or noncombustible, Installed in accordance with their listing where sprinklers are listed for use under other ceiling construction features or for different distances, Sprinklers shall be permitted to be spaced on opposite sides of. Baffles shall be not less than 8 in. October 2016 This blog was originally posted at blog.qrfs.com. Therefore, building owners must ensure that all storage and objects in the room remain 18 below the sprinkler deflector as shown in the image below. 0000003859 00000 n For horizontally oriented obstructions like truss cords, the maximum distance required is 36 inches. Check out our previous blogs for more information on hydraulic calculations for sprinkler systems and the process of sprinkler system design. Sprinklers under or near the peak of a roof or ceiling shall have deflectors located not more than 3 ft (900 mm) vertically down from the peak in accordance with Figure 10.2.6.1.3.1(a) and Figure 10.2.6.1.3.1(b). Sprinkler system piping less than 3 inches in diameter can be ignored. NBC Figure 1) are "Control-Mode Extended Coverage Sprinklers" having a nomi-nal K-factor of 16.8. We explain the difference between standard and extended coverage, discuss the types of spaces where the EC will provide an effective protection. Find a manufacturer that has both EC and Standard coverage sprinklers that are listed as QR for both style of occupancies in concealed style. I'd suggest using concealed type sprinklers the cover plates look the same on each. according to nfpa 13, for standard & extended coverage pendant & upright spray sprinklers, where walls are angled or irregular, the maximum horizontal distance between a sprinkler and any point of floor area protected by that sprinkler shall not exceed 0.75 times the allowable distance permitted between sprinklers, provided that the maximum To ensure the lower sprinklers operate as intended, the heads installed under open grating or round ducts should have the same kind of water shield (baffle) typically found on intermediate-level in-rack sprinklers (11.2.5.3.4-5). January 2021 Let us know if you need any design and engineering assistance for the same. Figure 11.2.5.1(b) below provides some clarity on this rule. Flammable & Combustible LIquids February 2019 NFPA 241 6. First, sprinklers must be located so they are within the hot-gas layer that develops near the ceiling during a fire because activation occurs when the sprinkler head reaches a certain temperature. The maximum distance shall be measured along the slope of the ceiling. February 2020 NFPA 55 For most obstructions, sprinkler designers turn to a couple of different versions of a pretty handy rule. If the light fixture has a diameter of 6 inches and a thickness of 4 inches, the maximum dimension is 6 inches. June 2021 June 2019 In fire protection, sprinkler spacing is critical. Maximum Distance from Wall: half (1/2) of the maximum distance between sprinkler heads. NFPA 214 July 2019 If you continue to use this site we will assume that you are happy with it. FM Global For example: Your building more than likely will have LH & OH rooms. (900 mm), the sprinklers shall be permitted to be spaced as though the ceiling were flat, provided the. The TYCO Series EC-11 and EC-14 Extended Coverage Upright and Pendent Sprinklers are decorative glass bulb sprinklers designed for use in light or ordinary hazard occupancies. We also provide answers to code, standards, and system application questions through our Ask a Fire Pro service. NFPA 30 Automatic Sprinklers* A guide to automatic sprinkler systems to assist . The only code section that comes to mind is NFPA 13 (2013) 8.3.3.2 which states if quick response sprinklers are used, all sprinklers shall be quick response. Sprinkler heads on the same circuits shall have matched precipitation rates. Daily Discussion But there is an alternative to measuring the linear distance from the sprinkler deflector to the obstruction. (1.7 m) to less than 6 ft (1.8 m), 6 ft (1.8 m) to less than 6 ft 6 in. NFPA 92 Spacing fire sprinklers to avoid obstructions is all about leaving enough space. NFPA 13 It is useful to understand how objects within this distribution area can alter the throw and disrupt the ability of the sprinkler Hope that helps. Resources Browse manuals and submittal forms. This rule also applies to sidewall sprinklers (11.3.6.1.4). 3. 0000001764 00000 n NFPA 70 Allowed to Mix Extended & Standard Coverage. Could you please help me? Subscribe and learn something new each day: Get 100 Days of Free Sample Questions right to you! Ltd. For example, a K=11.2 extended coverage sprinkler is listed as a light hazard quick response sprinkler to cover an area of 400 sq.ft., but when used in the higher ordinary hazard classification it is listed only as a standard response sprinkler. (100 mm). (1.4 m), 4 ft 6 in. Standard Coverage FireLock Series FL-QR/C Sprinklers FireLock Series FL-QR/C Sprinklers V5606, K5.6 | 8.1 SI V3802, K5.6 | 8.1 SI V3808, K5.6 | 8.1 SI General Questions? (25 mm to 150 mm) below noncombustible structural members and a maximum distance of 22 in. 814, B-wing LODHA Supremus II, Road Number 22, Near New Passport Office, Wagle Estate, Thane, Maharashtra. If this article helped you, check us out at Facebook.com/QuickResponseFireSupply or on Twitter @QuickResponseFS. 0 IPC I often have a room (classroom for example) where four EC sprinklers make more sense than none standard coverage sprinklers, but perhaps there is an additional nook or door alcove that needs an additional sprinkler, and I might use a standard coverage sprinkler for that small area. October 2018 4. (50 mm and 75 mm) above the deflectors of, The bottoms of baffles shall extend downward to a level at least even with the deflectors of, Installed with the deflectors within the horizontal planes of 1 in. (1.1 m), 3 ft 6 in. 11.2.2 Protection Areas Per Sprinkler (Extended Coverage Upright and Pendent Spray Sprinklers), 11.2.2.1* Determination of Protection Area of Coverage. The first sprinkler in the hydraulic calculations is so critical in getting it right. It requires the designer to do some algebra, but the sprinkler spacing only applies if the obstruction is greater than 30 inches in width. If your standard spray sprinklers are quick response, your extended coverage spray sprinklers will need to be listed as quick response as well. The distance from sprinklers to walls shall not exceed one-half of the allowable distance permitted between sprinklers as indicated in Table 11.2.2.1.2. November 2019 I cannot think of a code section that states you cannot mix standard and extended coverage sprinklers. They are intended for use in automatic sprinkler systems designed in accordance with standard installation rules for a maximum coverage area of 400 ft2 (37,2 m2), as . April 2020 Wayne Ammons. (2.3 m) to less than 8 ft (2.4 m), 8 ft (2.4 m) to less than 8 ft 6 in. IMC November 2018 Ltd. Get in touch today to discuss your unique requirements and we shall advise on the options available to you, Head Office:814, B-wing LODHA Supremus II, Road Number 22, Near New Passport Office, Wagle Estate, Thane, Maharashtra INDIA 400604, Email: [emailprotected]Phone: +91-22-49249966Mobile: (+91) 9819893536. In fact, extended coverage sidewall sprinklers also use the four-times rule (11.3.6.2.1.3). (450 m) to less than 2 ft (600 m), 2 ft (600 m) to less than 2 ft 6 in. (450 m), 1 ft 6 in. June 2017 Residential, extended coverage, CMSA, and ESFR sprinklers start with a beginning pressure and flow. July 2017 NFPA 409 When obstructions are present, sprinklers must be arranged so they can throw water under and around the blockage. NFPA 110 E M Improvement India Pvt. Article Updated: October 2, 2021 Help make Archtoolbox better for everyone. 8.8 Extended Coverage Upright and Pendent Spray Sprinklers 8.8.3.4 Minimum Distance Between Sprinklers. Weekly Exams, December 2022 For existing buildings, sprinkler work should comply with the 2014 Administrative Code, section 28-101.4.3 and the remainder of the Construction Codes, but in particular Building Code (BC) Chapter 9.Per the current 2014 Administrative Code, section 28-101.4.3, additions, alterations or modifications to sprinkler systems shall . In the first part of this series, we looked at the basics of how extended coverage sprinklers should be spaced in a room, ensuring sprinklers arent too close to one another nor too far apart. Spacing up to 20ft x 20ft (6.1m x 6.1m) FEATURES: Extended Coverage protection to 400 ft2 (37.2 m2) per sprinkler. Locate these points by drawing a perpen-dicular line from each part-circle head, across the area, to the . ft. coverage area for standard coverage upright and pendent NFPA 654 Contact our customer service team. Sprinklers shall be permitted to be spaced on opposite sides of obstructions not exceeding 4 ft (1.2 m) in width provided the distance from the centerline of the obstruction to the sprinklers does not exceed one-half the allowable distance permitted between sprinklers. (2.6 m) to less than 9 ft (2.7 m), 9 ft (2.7 m) to less than 9 ft 6 in. Learn the rules for extended coverage sprinklers and obstructions. Sprinklers shall be located a minimum of 4 in. 0000002796 00000 n 14.2.8.2.4 Deviations from the maximum sprinkler spacing shall be permitted to eliminate . E&l]uLV#?x1*|I!bvBZ+sfy'rt^.e3J August 2018 Remember, if the obstruction is less than 30 inches wide, you can ignore it and space the sprinkler from the wall beyond. Building Services Meridian City Hall, Suite 102 33 E. Broadway Avenue Meridian, Idaho 83642 _ De _____ Public Works Department Section 25.8.3 and FM Data Sheet 8-9. NFPA 497 Ensure response type matches. The Model N252EC sprinkler is also used as part of the N-RACK-EC extended coverage in-rack sprinkler system. Smoke Management Fire sprinklers need to develop an adequate spray pattern of water when they activate. (1.1 m) to less than 4 ft (1.2 m), 4 ft (1.2 m) to less than 4 ft 6 in. The four times rule for the distance between obstructions and extended coverage sprinklers is a modified version of the three times rule for standard spray sprinklers. (100 mm) from a wall unless listed for distances less than 4 in. Unfortunately, its possible for adjacent sprinklers to wet and cool sprinklers installed under obstructions, especially if the obstruction has open grating or is a round duct. A117.1 A variation of these rules applies to obstructions against the wall. Figure 11.2.5.1.2(a) helps clarify this implementation. Extended coverage sprinklers have certain limitations under NFPA 13 (2002) Section 8.4.3. Instead, sprinklers must be installed underneath the obstruction (11.2.5.3.2). 129 21 The tops of baffles shall extend between 2 in. 5. According to NFPA 13, an obstruction is any object or structure at or below the level of sprinkler deflectors that affects the discharge pattern of a sprinkler (3.3.133)., An obstruction is considered continuous if it affects two or more adjacent sprinklers. November 2022 April 2021 Don't mix manufacturers if you don't have to. (2.6 m), 8 ft 6 in. Flanking the obstruction will not solve the problem either. Viking Fire Sprinklers Extended Coverage Sprinklers Extended Coverage Sprinklers Viking sprinklers are available in various finishes for frame-style sprinklers and concealed sprinkler cover plates. September 2021 WAs);Hetzs62H In the unobstructed light hazard spaces covered in Table 10.2.4.2.1(a), the maximum area one sprinkler can protect is 225 ft. 2 (20 m 2): March 2019 It would be easy to place sprinklers in an empty room with a perfectly smooth ceiling. %PDF-1.4 % document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); hydraulic calculations for sprinkler systems, #415 A Guide to Key NFPA 25 Changes in the 2023 Edition, #414 Fire Sprinkler Testing Procedures & Replacement in NFPA 25, #413 How to Replace Old Residential Fire Sprinkler Heads with Different or Missing K-Factors, #412 How to Avoid CPVC Pipe Problems Due to Chemical Incompatibilities, #411 The History and Successes of Fire Prevention Week, #361 Fire Safety in Churches, Temples, Mosques, and Synagogues, #286 Fire Hydrant Colors: Their NFPA Spectrum and Meaning, #147 Significant Changes to the 2019 Edition of NFPA 13, Part 1, #313 ICC and NFPA Codes and Standards: A Basic Guide. 0000002871 00000 n Sprinkler Spacing Area watered by each sprinkler must overlap They are designed to require 100% overlap of watered areas The Sprinkler radius = the distance December 2018 Ceiling fans less than 60 in diameter can be ignored if their plan view is at least 50% open. And with this capability, the sprinkler head spacing distance rules change. Reliable extended coverage sprinklers are approved to protect light, ordinary, and extra hazard occupancies, and are available in a wide variety of finishes, temperatures, and styles. 0000008533 00000 n Reliable indicates the minimum spacing on all sprinklers that differ from NFPA 13, NFPA 13R and NFPA 13D standards. April 2022 Now, if the coverage of the part-circle heads across the width of the area also does not meet the spacing criteria, then full-circle sprinklers need to be added along the length of the area. If you already have implemented NFPA 2007 design compliance then you would any way know the differences for 2019 edition. Sprinkler Head Location FLS Engineering Consultants Pvt. #2`#F=ns7uFxukqG96kgT_NID3/Q%^V,TF%EBpYFZ)T SVFnv5b (2.3 m), 7 ft 6 in. Roofs and ceilings having a pitch not exceeding 2 in 12 (16.7 percent) are considered horizontal in the application of, 11.2.5 Obstructions to Sprinkler Discharge (Extended Coverage Upright and Pendent Spray Sprinklers), Sprinklers shall be located so as to minimize. NFPA 72 0000006104 00000 n Just my two pennies. When overlapped, the weak area of coverage from one sprinkler is supple-mented by the surrounding sprinklers. November 2021 The 144 ft2 (13,4 m2) coverage with maximum spacing of 15 ft. (4,3 m) for the EC-17 Sprinklers can be beneficial for retrofitting an existing system to a . August 2021 A potential advantage of EC sprinklers is the reduced cost of 8.8.3.4.1 Unless the requirements of 8.8.3.4.2 are met, sprinklers shall be spaced not less than 8 ft (2.4 m) on center. But there are also two situations when they must use the offset rules and the 8-foot rule. Pay attention to obstruction rules as outlined in NFPA as both will be different for each type for the same type of architectural feature. 0000010488 00000 n Merely divide the area of the room by the number of sprinklers to get the area of coverage for each sprinkler. Their use is espe- . The deflector of the extended coverage sprinkler therefore must be at least 24 inches (6 x 4 = 24) from this light fixture. . August 2020 Getting sprinkler spacing and coverage right is fundamental and a core part of fire sprinkler system design and hydraulic calculations. 0000000734 00000 n HOME; NEWS; . Quickly identify the right products for your project with the Viking Sprinkler Selector! 11.3.4 Sprinkler Spacing (Extended Coverage Sidewall Spray Sprinklers) 11.3.4.1 Maximum Distance Between Sprinklers 11.3.4.1.1 Special Hazard Systems Reliable extended coverage sprinklers are designed to protect larger areas than specified by installation rules for standard spray sprinklers. February 2022 UFC 3-600-01 Head-To-Head Coverage The absolute number one rule in spacing is called "Head-to-Head coverage" or Head-to-Head spacing. NFPA 220 The obvious solution for him is to require the heads more than 15 feet apart to be extended coverage type. NICET Explosion Protection & Prevention It applies to blockages that are no more than 18 inches below the sprinkler deflector: 11.2.5.2.1.3 Unless the requirements of 11.2.5.2.1.4 through 11.2.5.2.1.8 are met, sprinklers shall be positioned away from obstructions a minimum distance of four times the maximum dimension of the obstruction (e.g., truss webs and chords, pipe, columns, and fixtures) in accordance with Figure 11.2.5.2.1.3(a) and Figure 11.2.5.2.1.3(b). Poll 1. All landscape areas shall be designed with plant spacing to achieve coverage of 80 percent of the landscape areas with living organic plant materials within two years. Make sure you can utilize the same manufacturer that will be listed in both OH and LH occupancies for the style of head you are using. 11.2.3.4 Minimum Distance Between Sprinklers. Design Professional Requirements: Sprinkler Applicability of Code. NFPA 14 (1.7 m), 5 ft 6 in. In some circumstances, standard distribution sprinkler heads will not provide enough coverage. 0000003406 00000 n Fire Sprinklers -Commercial & Residential Fire Sprinkler Products |Victaulic Fire Sprinklers Please use the options below to filter our Sprinklers Catalog Categories K Factor Deflector Show advanced filters FacetWP was unable to auto-detect the post listing Load More Products gimme fonts Where the distance between the upper ceiling and the sprinkler deflector is less than or equal to 36 in. This table shall be used only as a tool for architects. minimum allowable spacing between Series EC-11 and EC-14 Sprinklers, is 8 feet (2,4 m) for upright sprinklers and 9 feet (2,7 m) for pendent sprinklers. March 2020 Obviously, sprinkler coverage area is critical to the calcs, but the listing of the extended coverage sprinkler will dictate the flow / pressure that the sprinkler needs to calculate at. Thanks, October 2020 Extended Coverage Sprinklers | We deliver an extensive package of Extended Coverage Sprinklers such as the F1FR K80 QREC, F1FR K115 QREC, G4 XLO QREC K160. Smooth aesthetic ceiling profile. Sprinkler Wrench for 15mm & 20mm Heads Standard Sprinkler Wrench View Full Details RD105 Commercial Flat Concealed Pendent Sprinkler K5.6 Commercial Flat Concealed Sprinkler Pendent, cULus Listed, FM Approved View Full Details RD107 Commercial Flat Concealed Pendent Sprinkler K5.6 Commercial Flat Concealed Sprinkler Pendent, LPCB, CE Only by delivering the prescribed volume of water to their coverage area can fire sprinklers cool and wet surfaces to prevent the spread of a fire. You are trying to use concealed sprinklers. The minimum 1" is typical; however, concealed, recessed, and flush sprinklers may be mounted less than 1" from the ceiling and shall be installed based on their listing. Do note that the maximum protection area rules stay the same under the small room rule. May 2020 October 2017 11.2.3.1.2 Installation Requirements for Extended Coverage Upright, Pendent, Sidewall Spray Sprinkler. Before we get into specific design requirements for obstructions, we should define the term. For obstructions to upright and pendent extended coverage sprinklers, chapter 11 of NFPA 13 first directs the reader to the four-times rule and a rule for placing sprinklers under large obstructions. trailer Extended coverage sprinklers protect more area than standard spray sprinklers. NFPA 33 EN 12845 June 2016. 0000008914 00000 n The most important application when using extended coverage heads is based on the recent testing using the EC-25 sprinklers. Design Documents There is more to it than the higher cost of an Extended Coverage (EC) Sprinkler. June 2018 ASCE 7 Extended coverage (EC) fire sprinklers do what the name says: provide more extensive coverage, typically allowing system designers to place fewer sprinklers in a given area. This is a general depiction of sprinkler throw and should not be used to determine sprinkler spacing. Chapter 11 of NFPA 13 hasyou guessed itspecial rules for these scenarios. NFPA 1221 Remember many EC sprinkler require a 8' minimum to prevent cold soldering vs 6' for standard coverage. Increasing the spacings by one-third to twenty feet nearly doubles the area of average coverage per sprinkler (up to four hundred square feet), but requires a minimum pressure of about 50 psi,. The idea is to line up diffusers, lights, sprinkler heads, smoke detectors etc. PE Prep Guide but are specifi-cally designed to be installed on linear and area spacings that exceed the normal sprinkler spacing requirements . The maximum distance permitted between sprinklers shall comply with Table 11.2.2.1.2. IRC NFPA 17A document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); East Corp NFPA 15 Viking Standard/Quick Response Extended Coverage Dry Horizontal Sidewall Sprinklers are thermosensitive spray sprinklers suitable for use in areas subject to freezing. (300 mm) from its allowable spacing, provided coverage for that sprinkler the sprinklers on that branch line and the sprinklers on the branch line it is moving away from does not exceed 110 ft2 (10 m2) per sprinkler where all of the following conditions . In this case, an adequate spray pattern will develop without placing sprinklers beneath the obstruction (11.2.5.3.2, 11.3.6.3). Means Of Egress NFPA 20 (2.9 m) to less than 10 ft (3.0 m), Within trusses or bar joists having web members not greater than 1 in. NFPA 1 (750 m) to less than 3 ft (900 m), 3 ft (900 m) to less than 3 ft 6 in. CJ covered the considerations that come to my mind, and I frequently (but not every time) mix standard coverage and EC. This is allowed per the standard. Its easier to understand what The maximum dimension of the obstruction means with an example. 0000011387 00000 n (150 mm) high. NFPA 13D If your standard spray sprinklers are quick response, your extended coverage spray sprinklers . The Tyco Model EC-17 Extended Coverage Pendent Sprinklers (Ref. Employing these rules exempts designers from using the four-times rule. The information contained in this article is general in nature and is to be used as a GUIDELINE for architects. For sidewall sprinklers, the rule applies if the obstruction is within 18 inches below the sprinkler deflector. Your email address will not be published. If your building needs more protection than you can get with a standard coverage fire sprinkler, or if heads cannot be installed to meet normal spacing requirements, you may need to install extended coverage sprinkler heads. This is useful in many applications, but it changes how they must be spaced out from other sprinklers, walls, and obstructions in the room. NFPA 855 August 2022 <<1DDB64F7D7EF61478A538D8357BD9241>]/Prev 312297>> Details of the system may be found in NFPA13 (2019 ed.) How many fire sprinkler heads do I need? If the obstruction does not exceed 4 ft wide, standard pendant- and upright-spray sprinklers shall be permitted to be spaced on opposite sides of such obstructions, provided the distance from the centerline of the obstruction to the sprinklers does not exceed one-half of the allowable distance permitted between sprinklers. I thought mixing heads of different orifices within the same compartment was not permitted. September 2020 0000000016 00000 n September 2022 Choose a product category below or use the search box above to find a specific product. OBC However, these calculations arent necessary if the projecting obstruction is less than 4 feet wide. NFPA 2001 (25 mm) maximum dimension or where trusses are spaced greater than 7. (900 mm) between the upper ceiling and the sprinkler deflector, a vertical plane extending down from the ceiling at the change in elevation shall be considered a wall for the purpose of sprinkler spacing. Additionally, designers must follow these rules when an obstruction is solid and continuous. Fire Detection And Alarm Systems I am attaching new Warehouse to it using 2019 edition TABLE 1: Average Square Spacing Ranges For a Wind Velocity of 0 to 3 mph use Maximum Spacing of 55% of Diameter D For Wind Velocity of 4 to 7 mph use Maximum Spacing of 50% of Diameter D For Wind Velocity of 8 to 12 mph use Maximum Spacing of 45% of Diameter D An equilateral triangle pattern has all sprinklers an equal distance (S) from each other. Upright & Pendent Horizontal Sidewall Fusible Element But what about sprinkler spacing for very large obstructions that might be located further away? Extended Coverage (1) Standard (9) Standard Coverage (427) Corrosion Resistance No (85) May Contain Lead . The diagram below shows the water distribution for standard pendant and upright sprinkler fixtures. 2/23/2022 06:48:09 am. March 2021 It says that the maximum distance from the sprinkler deflector to the obstruction is the smaller of four times the largest dimension of the obstruction or 36 inches. Where a vertical change in ceiling elevation within the area of coverage of the sprinkler creates a distance of more than 36 in. We use cookies to ensure that we give you the best experience on our website. There are two main criteria for the location of sprinkler heads. Extended Coverage Sprinklers | Minimax What are you looking for? 0000001720 00000 n November 2020 Where walls are angled or irregular, the maximum horizontal distance between a sprinkler and any point of floor area protected by that sprinkler shall not exceed 0.75 times the allowable distance permitted between sprinklers. Actual design of a sprinkler system MUST be done by a Professional Engineer for each project. Obviously you can mix orifice sizes in situations like hotel rooms where you have an extended coverage sidewall protecting the sleeping area and a standard coverage head in the entry way. We cant cover everything, however. ASME A17.1 Table 11.3.3.2.1 Protection Area and Maximum Spacing for Extended Coverage Sidewall Spray Sprinklers 11.3.3.2.2 In any case, the maximum area of coverage of a sprinkler shall not exceed 400 ft 2 (37 m 2 ). Water Based Fire Suppression NFPA 400 Interpreting fire codes and standards is challenging, but QRFS takes pride in making fire protection rules accessible to everyone on our blog. In some circumstances, standard distribution sprinkler heads will not provide enough coverage. Extended coverage sprinklers protect more area than standard spray sprinklers. NFPA 415 NFPA 54 This prompted the submittal of a proposal for the 2002 edition whereby Table 8.9.5.1.3 (the section number changed in 1999 and again 2002) would have an allowance to have . xref Designers are free to choose to use the 8-foot rule and the offset rules instead of the four-times rule (11.3.6.2.1.4). Extended Coverage (EC) sprinklers are intended for Light-Hazard occupancies with smooth, flat, horizontal ceilings unless otherwise specified. Determination of the protection area of coverage and sprinkler spacing for sprinklers listed for extended coverage, 11.2.2.2 Maximum Protection Area of Coverage, The maximum allowable area of coverage for a sprinkler (, In any case, the maximum area of coverage of a sprinkler shall not exceed 400 ft, 11.2.3 Sprinkler Spacing (Extended Coverage Upright and Pendent Spray Sprinklers), 11.2.3.1 Maximum Distance Between Sprinklers, The maximum distance permitted between sprinklers shall be based on the centerline distance between sprinklers on the branch line or on adjacent. In the case of the extended coverage heads the square footage can range between 144-196 square feet per sprinkler head. And this must happen whether a room is completely empty or full of water-blocking obstacles. This means that the spray from one sprinkler head should reach the next closest sprinkler head, and vice . 0000002171 00000 n Minimum Distance Between Sprinklers: typically 6-0. NFPA 96 Listing dimensions shall be even-numbered square protection areas as shown in Table 11.2.2.1.2. 0000001577 00000 n Sprinklers shall be permitted to be placed less than 8 ft (2.4 m) on center where the following conditions are satisfied: 11.2.4 Deflector Position (Extended Coverage Upright and Pendent Spray Sprinklers). Say an obstruction to a fire sprinkler is a circular light fixture suspended from the ceiling. 149 0 obj <>stream We stock a full line of commercial fire sprinklersstandard spray and extended coveragefrom companies like Tyco, Victaulic, and Viking. NFPA 291 The 2019 edition of NFPA 13 says: 11.2.5.1.1 Sprinklers shall be located so as to minimize obstructions to discharge as defined in 11.2.5.2 and 11.2.5.3, or additional sprinklers shall be provided to ensure adequate coverage of the hazard. July 2021 NFPA 82 I have existing warehouse with sprinklers as per NFPA 13 2007 Edition. 0000002985 00000 n Extended coverage sprinklers have a water distribution radius of a little over 10 feet, so they can be spaced approximately 20 feet apart. September 2017 The problem at that time was that Table 4-9.5.1.2 for extended coverage sidewall sprinklers did not have a similar allowance for obstructions closer to the sprinkler. Sprinklers shall be arranged to comply with one of the following arrangements: 11.2.5.2 Obstructions to Sprinkler Discharge Pattern Development, Regardless of the rules of this section, solid, The maximum clear distance shall not be applied to, Sprinklers shall be permitted to be spaced on opposite sides of the, 8.8 Installation Requirements, Extended Coverage Upright and Pendent Spray Sprinklers, Table 8.8.2.1.2 Protection Areas and Maximum Spacing (, 11.2 Installation Requirements for Extended Coverage Upright, Pendent, Sidewall Spray Sprinkler, Extended Coverage Upright and Pendent Spray Sprinklers. Incorrect Sprinkler Head Spacing: Even if sprinklers appear to be sprayed evenly over an area, there may be gaps in the coverage. (2.9 m), 9 ft 6 in. Extended Coverage Sprinkler Heads NFPA 25 I have to update existing to 2019 For vertical obstructions like columns, the second-largest dimension is used. July 2018 . December 2021 Standard sprinklers are just that: the standard when it comes to installing sprinklers. ***WARNING: Fire suppression systems, including sprinklers, MUST be designed by a Professional Engineer. (750 m), 2 ft 6 in. When planning and installing sprinklers, it is important to layout the heads with "head to head" coverage. Alex. The new extended coverage pendent IRAS uses a nominal K factor of 25.2 and allows for much more increased spacing both vertically and horizontally as compared with conventional IRAS. . (2 m) to less than 7 ft (2.1 m), 7 ft (2.1 m) to less than 7 ft 6 in. August 2017 When an obstruction is more than 4 feet wide, extended coverage sprinklers cannot be arranged to throw water around the obstacle, no matter how far down the obstruction is. Sprinkler Head Spacing: Extended Coverage Fire Sprinklers, Part 1. Be careful spacing regarding sprinklers. Sprinkler spacing must satisfy this equation: A is the horizontal distance between the sprinkler deflector the obstruction, B is the vertical distance between the deflector and the bottom of the obstruction. NFPA 24 April 2019 The table below shows sprinkler spacing requirements based on NFPA 13. Automatic sprinklers heads . (3.7m x 3.7m and 4.3m x 4.3m spacing) - Standard Response for Ordinary Hazard (4.9m x 4.9m, 5.5m x 5.5m and 6.1m x 6.1m spacing)-Available with solder link or 3 mm Glass Bulb . Head-to-Head coverage applies to both sprays and rotors. and 3 in. 'qv2+M-q+swUWtK-E-l#>Sk0 @W-r#Am0+Fp$v+GnMQ}OKN/x"`i(^Q1jM&/{:g=`H)88ui )X) Namely, were looking at obstructions. Zoning regulations and districts are herein established in accordance with a comprehensive plan for the purpose of promoting the health, safety, morals and general welfare of the In this article, weve explained how NFPA 13 directs sprinkler system designers to space extended coverage fire sprinklers when obstructions are present. NFPA 495 There should be some plan set forth though to prevent sprinklers from being replaced with standard coverage down the road. Mixing standard (coverage) pendent and extended coverage pendent in the same ceiling plane is a bad idea. Distance from Ceiling: minimum 1, maximum 12 for unobstructed construction. Calculation methods, area reductions should still follow rules for NFPA and EC sprinkler manufacturer requirements. For your most complicated code and system application questions, turn to our Ask a Fire Pro service. August 2019 As is often the case with fire protection rules, there are a few caveats: This set of diagrams from NFPA 13 clarifies the meaning of the four times rule: NFPA 13 also lists a few situations when designers do not have to follow the four-times rule: Arranging sidewall sprinklers when obstructions are present can be more difficult. 2. This applies to sidewall sprinklers, as well (11.3.6.3.2). Human Behavior ICC-500 0000008809 00000 n 0000001441 00000 n In this blog, we take a deeper dive into the rules for extended coverage sprinkler spacing and placement. ADA But real buildings have joists, beams, storage racks, light fixtures, and more. 61 Extended Coverage Spacing ECLH Sprinkler Minimum Design Spacing Area of coverage Light Hazard Density Minimum water flow * % Fewer Sprinklers 16 x ft.10 gpm/sq ft gpm 13% 18 x ft.10 gpm/sq ft gpm 30% 20 x ft.10 gpm/sq ft. 40 gpm 44% *Based on a 225 sq. March 2022 The code prohibits using different orifice sizes to minimize sprinkler discharge (NFPA 13 -2013 23.4.4.8.2). In these cases, extended coverage sprinkler heads can be installed to increase the spacing between heads. May 2019 the tyco series ty-frb, 5.6,and 8.0 k-factor, extended coverage horizontal sidewall sprinklers are extended coverage, decorative 3 mm glass-bulb type spray sprinklers designed for use in hydraulically calculated sprinkler systems in light hazard, commercial occupancies such as churches, restaurant seating areas, hotels, educational facilities, July 2020 January 2020 0000002605 00000 n UFC 4-021-01 Fire Dynamics Only the Style 30 or . A different set of offset values should be employed when the obstruction projects from the same wall as the sidewall sprinkler (11.3.6.1.4). NFPA 5000 According to NFPA 13 (2016) 8.5.6.1, unless certain requirements are met, the distance between the deflector and the top of storage shall be at least 18 inches. NFPA design compliance is purely AHJs call to follow and implement. Instead, you may determine the horizontal and vertical offset needed for the sprinkler to throw water around the obstruction. And watch your calcs if this becocmes the hydraulic remote area. What are the differences? Pressure compensating devices or heads shall be used to prevent excessive loss of water from . Other sprinklers have to be determined by taking the density times the protection area per sprinkler in Section 8.5.2.1. These specific distances ensure that sprinklers cover the design's necessary area and that they don't go off late or ineffectively. Extended coverage sprinklers have a water distribution radius of a little over 10 feet, so they can be spaced approximately 20 feet apart. IBC Similar offset rules may apply or can be employed with sidewall sprinklers. Extended Coverage Sprinklers must only be installed in accordance with the applicable UL and C-UL Listing or FM Approval requirements as indicated below. If a designer chooses to (or must) follow more strict rules for horizontal and vertical offsets. The distance from the wall to the sprinkler shall be measured perpendicular to the wall. Minimum spacing is for lateral distance between sprinklers located along a single wall, otherwise adjacent sprinklers (i.e., sidewall sprinklers on an adjacent wall, on an oppo-site wall, or pendent sprinklers) must be located outside of the maximum listed protection area of the extended coverage sidewall sprinkler being utilized. 0000010449 00000 n Each head should throw water far enough so that it hits the next head. Individualized Fire Sprinkler Solutions Every building and business demands a unique fire sprinkler solution. data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAKAAAAB4CAYAAAB1ovlvAAAAAXNSR0IArs4c6QAAAnpJREFUeF7t17Fpw1AARdFv7WJN4EVcawrPJZeeR3u4kiGQkCYJaXxBHLUSPHT/AaHTvu . Proper overlap ensures even distribution of water and eliminates dry spots. (550 mm) below the ceiling/roof deck, Installed with the deflectors at or above the bottom of noncombustible structural member to a maximum of 22 in. If not one of those two types check the book All Resources Submittal Manuals Technical & Design Data Software Content Find files related to this product > Baffles shall be arranged to protect the actuating elements. Can't remember the section. PE Prep Series Extended coverage sprinklers have a water distribution radius of a little over 10 feet, so they can be spaced approximately 20 feet apart. There are also extended coverage fire sprinkler heads that can combat building challenges and exceptions, including small rooms, curved surfaces, and angled walls. October 2019 Second, designers must use the 8-foot rule and the vertical and horizontal spacing rules if the obstruction is solid and continuous. NFPA 11 In these cases, extended coverage sprinkler heads can be installed to increase the spacing between heads. October 2022 NFPA 75 4. July 2022 September 2018 January 2019 NFPA specifies the minimum spacing for sprinklers, but also states that sprinklers must be installed in accordance with their listing in the event that the listed minimum distance differs from the standard. Be careful of a few items: Sprinkler Head Spacing PE Sample Problems Extended Coverage Sprinklers. The four-times rule, the various offset rules, and the other rules weve discussed so far have all been for obstructions that are comparatively small and relatively close to the sprinkler deflectors. If it only affects one sprinkler, it is noncontinuous.. February 2021 NFPA 13: Standard for the Installation of Sprinkler Systems has rules for how fire sprinklers should be arranged in a room and outlines how much space the sprinklers cover and how far the sprinklers are from walls and other sprinklers. Chapter 11: Extended coverage upright, pendent, sidewall spray sprinkler Unlike upright and pendent sprinklers, sidewall sprinklers cannot be placed exactly where they are needed in the roomthey are limited to the walls. ** We will show how the more costly sprinkler can result in significant total savings in a sprinkler system. Head-to-head spacing, or sprinklers spaced at 50% of the sprinkler's diameter, is most common to ensure . Tyco RFII Fire Sprinkler Head Cover Plate Tyco RFII Signal White Fire Sprinkler Cover Plate with 139F (59C) activation temperature. startxref May 2021 Nominal K-factor of 11.2 (160 metric). Sprinklers must spray water over an adequate coverage area to control a fire. We have a tool bag that allows us choices which permit us to achieve our goals and permit the Arch to achieve their design intent and goals, giving the customer a safe and Arch pleasing environment. This fire sprinkler cover works with Tyco's RFII concealed pendent fire sprinklers. circle heads to satisfy the spacing criteria. What are the requirements for a sprinkler system? I.E. These sprinkler heads have an increased radius of approximately 10 ft and can be spaces about 20 ft apart. Please note, that the throw of a sprinkler should not be used for sprinkler spacing local codes determine spacing requirements. May 2022 You must have a Professional Engineer design a sprinkler system to address your specific situation and to meet the codes applicable in your jurisdiction. Deflectors of sprinklers shall be aligned parallel to ceilings or roofs. 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